One of the oldest disabled adult bodies ever found was from thousands of years ago. From her remains, the archaeologists determined that she was likely never able to walk. However, the only thing that seemed wrong with her body was her teeth. They were in bad shape because she was fed a lot of dates, probably because they were sweet. The fact that there has pretty much always been humans who take care of their disabled family like that proves to me that humans are naturally caring.
Imagine a nomadic group of humans give birth to someone who is paralyzed from the neck down at birth in a time before wheels. If humans were that selfish, we wouldn't see life long high needs disabled people living into their later years in that scenario. However, we still do. Many other creatures have very little tolerance for genetic variance, humans by comparison are amazing about this.
One of the oldest disabled adult bodies ever found was from thousands of years ago. From her remains, the archaeologists determined that she was likely never able to walk. However, the only thing that seemed wrong with her body was her teeth. They were in bad shape because she was fed a lot of dates, probably because they were sweet. The fact that there has pretty much always been humans who take care of their disabled family like that proves to me that humans are naturally caring.
Imagine a nomadic group of humans give birth to someone who is paralyzed from the neck down at birth in a time before wheels. If humans were that selfish, we wouldn't see life long high needs disabled people living into their later years in that scenario. However, we still do. Many other creatures have very little tolerance for genetic variance, humans by comparison are amazing about this.